Black and decker kr504 single speed percussion hammer drill suitable for home drilling the hammer action is suitable for drilling into masonry up to 10mm equiped with a high quality keyed chuck and lock on button for greater comfort ideal for drilling into a variety of materials such as wood metal plastic and masonry specification input power 500 watt no load speed 0 2800min impact rate 47600min capacity masonry 10mm steel 10mm wood 20mm chuck 10mm keyed max torque 37nm cable length 2m